# Need help flatten json object in logstash filter
**URL:** https://discuss.elastic.co/t/need-help-flatten-json-object-in-logstash-filter/71720
**Category:** Logstash
**Created:** [January 16, 2017, 11:20am UTC](https://discuss.elastic.co/t/need-help-flatten-json-object-in-logstash-filter/71720 "2017-01-16T11:20:13Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@MarcelHallmann](https://discuss.elastic.co/u/MarcelHallmann)
#### Post date: [January 16, 2017, 11:20am UTC](https://discuss.elastic.co/t/need-help-flatten-json-object-in-logstash-filter/71720/1 "2017-01-16T11:20:13Z")
Hi,
my data structure is as follows:
`{ "name": "my-validation", "timestamp": "", "details": { "2017-01-21": "My Validation result 1: OK", "2017-02-01": "My Validation result 2: OK", "2017-01-22": "My Validation result 3: OK", "2017-01-30": "My Validation result 4: OK" } }`
Every day the validation details key changes as it is a date.
I need to visualize the details in a data table, but I can't bind the every-day changing keys to a field within the data table.
Now my idea was to split/mutate the events when reading it by logstash, so that the data structure would be:
`{ "name": "my-validation", "timestamp": "", "details0": { "2017-01-21": "My Validation result 1: OK" }, "details1": { "2017-02-01": "My Validation result 2: OK" }, "details2": { "2017-01-22": "My Validation result 3: OK" }, "details3": { "2017-01-30": "My Validation result 4: OK" } }`
so I could use the static fields details0, details1, etc. to create the data table.
Could anybody plz help to create the logstash-filter?
Or is there any other possible solution?
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 13, 2017, 11:20am UTC](https://discuss.elastic.co/t/need-help-flatten-json-object-in-logstash-filter/71720/2 "2017-02-13T11:20:40Z")
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